Add sniff timeoit

app/dispatcher/default.go

@@ -31,10 +31,18 @@ type cachedReader struct {
 	sync.Mutex
 	reader *pipe.Reader
 	cache  buf.MultiBuffer
+
+	ReadBufferTimeout time.Duration
 }
 
 func (r *cachedReader) Cache(b *buf.Buffer) {
-	mb, _ := r.reader.ReadMultiBufferTimeout(time.Millisecond * 100)
+	var timeout time.Duration
+	if r.ReadBufferTimeout == 0 {
+		timeout = time.Millisecond * 100
+	} else {
+		timeout = r.ReadBufferTimeout
+	}
+	mb, _ := r.reader.ReadMultiBufferTimeout(timeout)
 	r.Lock()
 	if !mb.IsEmpty() {
 		r.cache, _ = buf.MergeMulti(r.cache, mb)
@@ -360,6 +368,8 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 
 	sniffer := NewSniffer(ctx)
 
+	cReader.ReadBufferTimeout = sniffer.Timeout
+
 	metaresult, metadataErr := sniffer.SniffMetadata(ctx)
 
 	if metadataOnly {

app/dispatcher/sniffer.go

@@ -2,6 +2,7 @@ package dispatcher
 
 import (
 	"context"
+	"time"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
@@ -10,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/protocol/http"
 	"github.com/xtls/xray-core/common/protocol/quic"
 	"github.com/xtls/xray-core/common/protocol/tls"
+	"github.com/xtls/xray-core/common/session"
 )
 
 type SniffResult interface {
@@ -30,9 +32,11 @@ type protocolSnifferWithMetadata struct {
 
 type Sniffer struct {
 	sniffer []protocolSnifferWithMetadata
+	Timeout time.Duration
 }
 
 func NewSniffer(ctx context.Context) *Sniffer {
+	content := session.ContentFromContext(ctx)
 	ret := &Sniffer{
 		sniffer: []protocolSnifferWithMetadata{
 			{func(c context.Context, b []byte) (SniffResult, error) { return http.SniffHTTP(b, c) }, false, net.Network_TCP},
@@ -41,6 +45,7 @@ func NewSniffer(ctx context.Context) *Sniffer {
 			{func(c context.Context, b []byte) (SniffResult, error) { return quic.SniffQUIC(b) }, false, net.Network_UDP},
 			{func(c context.Context, b []byte) (SniffResult, error) { return bittorrent.SniffUTP(b) }, false, net.Network_UDP},
 		},
+		Timeout: content.SniffingRequest.Timeout,
 	}
 	if sniffer, err := newFakeDNSSniffer(ctx); err == nil {
 		others := ret.sniffer

app/proxyman/config.pb.go

@@ -190,8 +190,9 @@ type SniffingConfig struct {
 	// Whether should only try to sniff metadata without waiting for client input.
 	// Can be used to support SMTP like protocol where server send the first
 	// message.
-	MetadataOnly bool `protobuf:"varint,4,opt,name=metadata_only,json=metadataOnly,proto3" json:"metadata_only,omitempty"`
-	RouteOnly    bool `protobuf:"varint,5,opt,name=route_only,json=routeOnly,proto3" json:"route_only,omitempty"`
+	MetadataOnly bool  `protobuf:"varint,4,opt,name=metadata_only,json=metadataOnly,proto3" json:"metadata_only,omitempty"`
+	RouteOnly    bool  `protobuf:"varint,5,opt,name=route_only,json=routeOnly,proto3" json:"route_only,omitempty"`
+	Timeout      int64 `protobuf:"varint,6,opt,name=timeout,proto3" json:"timeout,omitempty"`
 }
 
 func (x *SniffingConfig) Reset() {
@@ -259,6 +260,13 @@ func (x *SniffingConfig) GetRouteOnly() bool {
 	return false
 }
 
+func (x *SniffingConfig) GetTimeout() int64 {
+	if x != nil {
+		return x.Timeout
+	}
+	return 0
+}
+
 type ReceiverConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -725,7 +733,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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 }
 
 var (

app/proxyman/config.proto

@@ -55,6 +55,8 @@ message SniffingConfig {
   bool metadata_only = 4;
 
   bool route_only = 5;
+
+  int64 timeout = 6;
 }
 
 message ReceiverConfig {

app/proxyman/inbound/worker.go

@@ -103,6 +103,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
 		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 		content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
+		content.SniffingRequest.Timeout = time.Duration(w.sniffingConfig.Timeout) * time.Millisecond
 	}
 	ctx = session.ContextWithContent(ctx, content)
 
@@ -326,6 +327,7 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 				content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
 				content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 				content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
+				content.SniffingRequest.Timeout = time.Duration(w.sniffingConfig.Timeout) * time.Millisecond
 			}
 			ctx = session.ContextWithContent(ctx, content)
 			if err := w.proxy.Process(ctx, net.Network_UDP, conn, w.dispatcher); err != nil {
@@ -477,6 +479,7 @@ func (w *dsWorker) callback(conn stat.Connection) {
 		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
 		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 		content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
+		content.SniffingRequest.Timeout = time.Duration(w.sniffingConfig.Timeout) * time.Millisecond
 	}
 	ctx = session.ContextWithContent(ctx, content)
 

common/session/session.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"math/rand"
 	"sync"
+	"time"
 
 	c "github.com/xtls/xray-core/common/ctx"
 	"github.com/xtls/xray-core/common/errors"
@@ -80,6 +81,7 @@ type SniffingRequest struct {
 	Enabled                        bool
 	MetadataOnly                   bool
 	RouteOnly                      bool
+	Timeout                        time.Duration
 }
 
 // Content is the metadata of the connection content.

infra/conf/xray.go

@@ -55,6 +55,7 @@ type SniffingConfig struct {
 	DomainsExcluded *StringList `json:"domainsExcluded"`
 	MetadataOnly    bool        `json:"metadataOnly"`
 	RouteOnly       bool        `json:"routeOnly"`
+	Timeout         int64       `json:"timeout"`
 }
 
 // Build implements Buildable.
@@ -92,6 +93,7 @@ func (c *SniffingConfig) Build() (*proxyman.SniffingConfig, error) {
 		DomainsExcluded:     d,
 		MetadataOnly:        c.MetadataOnly,
 		RouteOnly:           c.RouteOnly,
+		Timeout:             c.Timeout,
 	}, nil
 }